Plow-cutter



(No Modem o. AQWREN.

PLOW GUTTER. l

No. 488,888. Patented Dee. 27, 1892.

@LW/imanes a/f NITED STATES PATENT OEEIcE.

CHARLES A. WREN, OF CORAL, MAINE.

PLOW-CUTTER.

SPECIFICATION forming part of Letters Patent No. 488,863, dated December 27, 1892.

Application tiled July 28, 1892. vSerial No. 441,487. (No model.)

.To all whom it may concern:

Be it known that I, CHARLES A. WREN, of Coral, county of Aroostook, State of Maine, have in vented certain new and useful Improvements in Plow-Cutters, of which the following is a specification, reference being had to the accompanying drawings.

The object of my invention is to produce a cutter to be set in advance of the point of a plow for cutting the way through a sward, or the like, whereby the plow may be guided evenly and smoothly in its course through the ground.

In practice cutters have either been rigidly united to the beam of a plow, or loosely pivoted thereto, depending upon the resistance of the sward to keep them in a correct position. There is difficulty in keeping the point of the cutter clear. In the rigid cutter it is apt to gather stones or the like which wedge themselves between the point of the cutter and the plow and prove a great annoyance to the operator. It has also been found that the resistance of the sward upon the loosely pivoted cutter is practically insufficient for the perfect operation of the device. By my invention I provide a pivoted spring-actuated cutter, curved conformably to the blade of the plow, whereby it is made to operate with precision and practical success; and by which it may be located nearer the point of the plow than heretofore; and in addition securing by that means better results.

In the accompanying drawings,Figure l is a side elevation of parts of a plow with my cutter attached; Fig. 2 is a view of the cutter with one side removed. Fig. 3 is a similar View showing a slide protector in front of the blade.

Referring to the figures on the drawings, l indicates the beam of a plow, and 2 its blade having a front curved edge 3, as illustrated.

4 indicates a colter frame, which may be of any suitable shape and size; and provided with lugs 5 by which, through the aid of bolts 6, it may be secured to the beam of the plow.

7 indicates a vertical opening through the cutter frame, and 8 indicates the blade of the cutter pivotally carried on a pin 9 within the frame.

10 indicates a spring adapted to urge the cutter blade toward the blade of the plow. Any suitable form of spring may be employed, as for example a leaf spring, seated at one end in the opening in the cutter frame, and pressing at its free end against the cutter blade below its pivotal point. The cutter blade is curved, as illustrated, conformably to the blade of the plow, whereby it may be set in close proximity to it, and form in eiect a movable forerunning blade of the plow blade itself. In the construction shown in Fig. 3 a slide 13, sliding in a way formed in the under side of the frame 4 and bearing at its forward end against the blade 8, to which slide the end of the spring IO, is connected at 13X, as clearly shown. Thus it is obvious that said slide plate I3 forms a protector or shield for preventing the passage of dirt into the opening 7 in which the cutter 8 plays,whereby the same would be rendered inoperative.

I n use, if an obstacle presents itself between the cutter blade-and the plow, the former will be forced forward far enough to admit of the passage between it and the plow blade of the obstacle, when immediately by the force of the spring the cutter-blade will move back into its originalposition without stop or loss to the operator.

What I claim isz- In a plow colter, the combination with a frame having a transverse opening, and a guide way extending at an angle thereto, and having means for attaching it to the plow beam, of a blade pivoted in said transverse opening in the frame, a slide plate arranged in the guide way in the frame and bearing at its free end against said blade, and a spring connected to said slide plate whereby it is held elastically against said blade, said transverse opening in the frame having a width greater than the width of the blade, substantially as specified.

In testimony of all which I have hereunto subscribed my name.

CHARLES A. WREN.

Witnesses:

DANIEL LEWIS, HENRY F. MORGAN. 

